XTE-HF Solar Cell
Spectrolab
Spectrolab's XTE High Fluence 32% BOL triple-junction solar cell for MEO and very high radiation environments exceeding 1e15 fluence, achieving 23.6% efficiency at 1e16 fluence.
Technical specifications
- BOL efficiency
- 32%
- EOL efficiency at 1e16 fluence
- 23.6%
- Cell technology
- GaInP/GaAs/Ge lattice matched triple-junction (3J)
- Qualification standard
- AIAA-S111-2014
- Target orbit
- MEO (>1e15 fluence, Van Allen belt)
- Available forms
- Bare cells or CIC assemblies
- Open Circuit Voltage Temperature Coefficient (BOL)
- -5.7 mV/°C
- Short Circuit Current Temperature Coefficient (BOL)
- 10 µA/cm²/°C
- Solar Absorptance
- 0.89
- Emittance
- 0.85
- Cell Thickness
- 80 µm - 225 µm
- Mass
- 50 - 84 mg/cm²
- EOL efficiency at 1e16 fluence (US Standard)
- 0.70
- Voc (BOL)
- 2.782 V
- Jsc (BOL)
- 18.0 mA/cm²
- Vmp (BOL)
- 2.490 V
- Jmp (BOL)
- 17.4 mA/cm²
- EOL efficiency at 1e16 fluence (European Standard)
- 0.74
About
The XTE-HF (High Fluence) is a GaInP/GaAs/Ge lattice-matched triple-junction solar cell optimized for medium Earth orbit and other very high radiation environments exceeding 1e15 1 MeV electron fluence. With 32% BOL efficiency and 23.6% efficiency at 1e16 fluence, it provides excellent end-of-life performance through the harshest orbital radiation belts, including Van Allen belt navigation missions.
Fully qualified under AIAA-S111-2014, the XTE-HF is engineered specifically for GPS/GNSS navigation satellite constellations, MEO communication satellites, and any mission profiled for intense long-duration particle bombardment. Part of Spectrolab’s industry-leading XTE cell family, available as bare cells or CIC assemblies.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.